Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Absorption and Reflection of Infrared Radiation by Polymers in Fire-Like Environments

Published

Author(s)

Gregory T. Linteris, Mauro Zammarano, Boris Wilthan, Leonard M. Hanssen

Abstract

In large-scale fires, the input of energy to burning materials occurs predominantly by radiative transfer. The in-depth absorption of radiant energy by a polymer influences its ignition time and burning rate. The present investigation examines two methods for obtaining the absorption coefficient of polymers for infrared radiation from high-temperature sources: a broadband method and a spectral method. Data on the total average broadband transmittance and absorptance for eleven thermoplastics are presented (as are reflectance data), and the absorptance is found to vary with thickness. Implications for modeling of mass loss experiments are discussed.
Citation
Fire and Materials
Volume
36

Keywords

pyrolysis modeling, material flammability, IR absorption, polymer diathermicity
Created July 17, 2012, Updated November 10, 2018